hamann



Patented fFeb. 7, |899.

2 Sheets-Sheet I.

mia...

R. W. HAMANN. SMOKE CONSUMER.

(Application led Hay 5, 1898.)

(No Modal.)

No. 6|9,|71. Patented Feb. 7, |899. n. w. HAMANN.

SMOKE CONSUMER.

"Application led May 5, 1898.1 (No Model.) 2 Sheets-Sheet 2.

37 jus. 5.

UNTTED STATES PATENT OFFICE.

RICHARD WV., IIAMANN, OF ST. LOUIS, MISSOURI, ASSIGNOR OF TVO-FIFTHS TORIOI'IARD WILLIAMS AND DANIEL BOONE, OF SAME PLACE.

SMOKE-CONSUMER.

SPECIFICATION forming part of Letters Patent No. 619,171, dated February7, 1899.

Application filed May 5, 1898. Serial No. 679,335. (No model.)

To all whom t may concern,.-

Be it known that I, RICHARD W. HAMANN, of the city of St. Louis, Stateof Missouri, have invented certain new and useful Improvements inSmoke-Consumers, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart thereof.

My invention relates to smoke-consumers; and it is an improvement upon asmoke-consumer a patent for which was issued to myself and John VoegeliJuly 7, 1896, and numbered 563,483.

The object of my invention is to provide a furnace-door with a blastapparatus which will force a blast of hot air into the flrewithin thefurnace, which blast of hot air will greatly facilitate the draft insaid furnace and will also combine with the elements in the furnace tocreate a perfect combustion of the smoke that arises from the fire ofthe furnace.

Figure 1 is a front elevation of a furnacedoor constructed and equippedin accordance with the principles of my invention. Fig. 2 is anelevation of the inside of said furnacedoor, parts thereof being brokenaway to more clearly illustrate the same. Fig. 3 is an enlarged verticalsectional view taken approximately on the line 3 3 of Fig. 1. Fig. 4 isa vertical sectional view of the fan used in connection with my improvedsmoke-consumer, said view being taken approximately on the line 4 4 ofFig. 3.

Referring by numerals to the accompanying drawings, 1 indicates thefront wall of the furnace, and 2 the furnace-door, which door isconnected to and swings-upon the furnacefront 1 by means of the hinges3. Formed integral with and projecting outwardly from the front face ofthe furnace-door 2 is a flange 4, irregular in outline, which fiange 4forms a casing, the right-hand portion of which is circular when viewedin elevation and the left-hand portion of which isv rectangular whenviewed in front elevation. The portions of the `casing so formedcommunicate with each other to form a single chamber. Riveted or boltedto the edge of the flange 4 bounding said casing is a plate 5 so formedas to fit upon said casing, in which plate 5 is formed a circularaperture 6, which is concentric with the circular portion of the casingformed by the flange 4.

Formed through the furnace-door 24 at the center of the circular portionof the casing is an aperture 7, and formed through said furnace-door,near the lower edge thereof and in the space surrounding the rectangularportion of the casing, is a rectangular aperture 8. Formed integral withthe furnace-door 2, and projecting from the inner face thereof, is acircular iiange 9, the same being concentric with the aperture 7, andriveted or bolted to the edge of this flange 9 is a circular plate 10. Atubular bearing or sleeve 11 is bolted to the front face of the door 2in such a manner as that the passage through said sleeve is in alinementwith the aperture 7, and said bearing or sleeve projects forwardly intothe center of the space within the circular portion of the casing formedbythe flange 4, and arranged for rotation in said bearing or sleeve is ashaft 12. lVith the forward end of said shaft 12 is formed integral aflange 13, that is bolted or riveted to a bracket 14.

The blast-fan is composed of a pair of disks 15, identical in form andsize, which disks are provided in their centers with circular openings16, and between said disks 15 are arranged the fan-blades 17. The endsof said fan-blades 17 are turned at right angles to the body portionsthereof, and said ends are riveted to the disks 15. The fan soconstructed is arranged to rotate in the circular portion of the casinghereinbefore described, the ends of the bracket 14 being riveted orbolted to the inner Vface of the outer one of the disks 15.

An oil-supply pipe 18 leads from the eXterior of the circular casingdownwardly to one side of the fan and to the center of the bearing orsleeve 11, said pipe being provided at its upper end with an oil-cup 19.

The inner end of the shaft 12 projects through the aperture 7 in thefurnace-door2 and into the chamberv formed by the circular flange 9,that is closed by the plate 10, and upon this end of the shaft 12 islocated a circular disk 20, to the edge of which is riveted a rim 21,which rim carries a plurality of semicircular projections 22, the samebeing ar- IDQ the space inclosed by the lcircular iiange 9.' Leadingthrough the flange 9, ata point near= the top thereof, is a pipe 24,that connects with the transverse pipe 25,that leads through thefurnace-door 2 to the exterior thereof, said pipe 25 being in turnconnected to a short vertical pipe 26, the same being connected by meansof au elbow to a horizontal pipe 27, that leads to a swiveled union28that is in direct; alinement with the hinges 3, upon which the doorswings, there being a steam-supply pipe 29, leading to said swiveledunion 28.

Leading from the bottom of the chamberl formed by the flange 9 is ahorizontally-ar# ranged exhaust-pipe 30, that is connected to aVertically-arranged pipe 31, that leads to the ash-pit. Thus supply andexhaust connections are formed to and from the turbine wheel of myimproved device.

A rectangular casing 32 of the same shape as is the furnace-door isprovided on its edge `with a flange 33, which flange is bolted orriveted to the edge of the inner face of said furnace door. Thus achamber is formed in which the turbine wheel and its casing are located.Formed in the top of the front wall of this casing 32 is ahorizontally-arranged slot 34, having curved inner edges, and adischarge-nozzle -35 projects from the interior of ythe'casing throughthis slot 34, the inner end of said discharge-nozzle being provided onits inner end with the flanges 36, that engage against the curved edgesof the slot 34. A set-screw 37 passes through the front wall of thecasing 32, the inner end of which setscrew is rotatably secured to theupper one of the segmental flanges 36.

A section of wire-netting 38 is fixed to the plate 5, that closes thecasing formed by the flange 4, which netting allows a free access of airto the fan, but prevents a person from accidentally touching said fanwhile the same is in operation, and said netting also prevents particlesof paper or string from being drawn into the fan while the same is inoperation.

The operation of myimproved smoke-consumer is as follows: When thefurnace-door is closed and it is desired to start the blast, the furnaceattendant opens a valve (not shown) in the pipe 29, which leads from thesteam-supply, and thus steam is allowed to pass through the pipes 29,'27, 26, 25, and 24, from the end of which pipe 24 it will be dischargedonto the periphery of the turbine wheel in the form of va jet. This willcause said turbine wheel to rotate ata high rate of speed, andnecessarily the shaft 12 and fan will likewise rotate. The steam afterperforming its work, together with any condensation, will exhaust'anddischarge through the' pipes 30 and 31 to the ash-pit. As the fan isrotated at a high rate of speed air will be drawn in through the opening6 in the front plate 5 and by said fan forced out of the. chambersurrounded by the iiange 4 through the opening 8 into the chamber withinthe casing 32, and from said chamber will discharge through thedischarge-nozzle 36 onto and into the fire within the furnace. Bypreviously manipulating the set-screw 37 the elevation of the mouth ofthe discharge-nozzle 35is changed, so that it will discharge the airdownwardly onto the fire or raised to discharge said air just above saidfire, this adjustment being differentiated in proportion to the degreeof heat that is maintained within the lire-box of the furnace. Byproviding the casing 32 on the inside of the furnacedoor, which casing,of course, is adjacent the fire, all of the air passing into the chamberwithin said casing 32 is .thoroughly heated before it is discharged ontothe fire.

In the patent above referred to combined air and steam is forced intothe fire; but I find in actual practice that much better resuits areobtained and the smoke may be more completely consumed by theintroduction of hot air only into and onto the fire.

A smoke-consumer so constructed is very simple in construction andoperation, requires but very little steam to run the fan at the requiredspeed, there are no parts that will burn out, and the various parts allbeing car-A ried by the furnace-door are easily accessible in case anyof said parts need adjustment or repair.

I claim l 1. In a smoke-consumer, the combination with a furnace-doorhaving a casing formed on its front, of a shaft rotatably arranged insaid casing through the furnace-door, a fan rigidly carried by saidshaft, a turbine wheel carried upon the shaft inside the furnacedoor,steam connections to and from said tur; bine wheel, a casing inside saidfurnace-door,

Ito

there being an opening through the furnace= door that communicates fromthe fan-cham; ber to the chamber within the casing inside the door, andan air-discharge nozzle leading from the casing on the inside of thedoor,

substantially as specified.

2. In a smoke-consumer,l the combination with a furnace-door, of afan-casing arranged on the front of Isaid door, a casing arranged on theinside of said door, there being an opening through the door from onecasing to the other, ay fan rotatably arranged within thefirst-mentioned casing, means for rotating said fan, and anair-discharge nozzle leading from the casing inside the door,substantially as specified. p

3. In a smoke-consumer, the combination with a furnace-door, of a casingarranged on the outside thereof, a casing arranged on the insidethereof, there being communication from the chamber in one casing to thechamber in the other, a fan rotatably arranged in the iirst-mentionedcasing, means carried by said door whereby said fan is rotated, anairdischarge nozzle passing through the Wall of the second-mentionedcasing, and means for changing the elevation of the mouth of saiddischarge-nozzle, substantially as specified.

4E. A smoke-consumer, constructed with a furnace-door, a casing formedon the front face thereof, a casing formed on the inner face thereof, asecond casing located upon the inner face thereof that incloses thefirst-mentioned casing on the inner face, there being communication fromthe chamber of the casing on the exterior of the door to the chamber ofthe larger casing on the interior of the door, a fan rotatably arrangedWithin the casing on RICHARD W. HAMANN.

Witnesses:

A. J. MCCAULEY, M. P. SMITH.

